A potentially habitable new planet has been discovered 146 light-years away – but it may be -70C

An artist's concept of the Earth-size planet HD 137010 b, which was identified by an international team of scientists in Australia, the UK, the US and Denmark. Illustration: NASA/JPL-Caltech/K. Miller (Caltech/IPAC)

Astronomers have discovered a potentially habitable new planet about 146 light-years away which is Earth-sized and has conditions similar to Mars.

The candidate planet, named HD 137010 b, orbits a sun-like star and is estimated to be 6% larger than Earth.